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Effects of flue gas on algal biomass production and composition in Skeletonema marinoi and a natural community from the Baltic Sea.
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (MPEA)
2014 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Flue gas from industries as a source of CO2 has in earlier studies showed a positive effect on microalgae growth. By microalgae carbon sequestration industries can reduce the amount of CO2 released into the air by fixating the carbon into algal biomass. Biomass produced can further be used as food, feed, fuel and chemicals. This study investigates effects of flue gas from a cement factory fed to Skeletonema marinoi and a diatom dominated natural community from the Baltic Sea in terms of algal biomass and high value products; lipids, carbohydrates and proteins. Cultures were grown in a high nutrient media and treated with air, CO2 and flue gas additions. There was no significant difference in biomass yield between the treatments and communities, nor between high value products comparing to air treatments, concluding that flue gas from the cement factory could be used for carbon sequestration with the potential of using a more resilient natural community or a polyculture rather than a monoculture.

Abstract [sv]

Resultat av tidigare studier där CO2 tillsatts i form av rökgas från industrier har visat en positiv effekt på mikroalgers tillväxt. Algkulturer kan minska mängden industriellt CO2 genom att fixera kolet i sin biomassa. Den producerade biomassan kan sedan användas vidare som livsmedel, foder, bränsle och kemikalier. Denna studie undersöker effekterna av rökgas från en cementfabrik tillsatt till kulturer av Skeletonema marinoi och till ett, av kiselalger dominerat, naturligt samhälle från Östersjön. Skillnader i algernas biomassa och sammansättning av högvärdiga produkter så som lipider, kolhydrater och proteiner undersöktes. Till kulturerna tillsattes luft, CO2 eller rökgas. Ingen signifikant skillnad i biomassa hittades mellan behandlingar eller samhällen. Rökgasen påverkade inte heller signifikant produktionen av högvärdiga produkter jämfört med kulturer behandlade med luft, vilket indikerar att rökgas från cementfabriken kan användas för alg produktion och att det potentiellt är mer fördelaktigt att använda en mer motståndskraftig polykultur framför en monokultur.

Place, publisher, year, edition, pages
2014. , p. 26
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-31720OAI: oai:DiVA.org:lnu-31720DiVA, id: diva2:691597
External cooperation
Subject / course
Biology
Educational program
Biology Programme, 180 credits
Supervisors
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Projects
AlgolandAvailable from: 2014-02-07 Created: 2014-01-28 Last updated: 2018-03-15Bibliographically approved

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